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Finding the Fourth Proportional to 28,236.29, 38,965.50 and 17,478.32

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Solution

The fourth proportional to 28,236.29, 38,965.50 and 17,478.32 is: 24,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,236.29 : 38,965.50 = 17,478.32 : x
  2. Step 2: Convert to fraction form
    28,236.29/38,965.50 = 17,478.32/x
  3. Step 3: Cross multiply
    28,236.29x = 38,965.50 × 17,478.32
  4. Step 4: Simplify right side
    28,236.29x = 681,051,477.96
  5. Step 5: Solve for x
    x = 681,051,477.96/28,236.29
  6. Step 6: Final answer
    x = 24,119.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.